 #查询里边有没有数字0, 如果有就打印'存在'[6,5,0,2,8,4,2,6,5,8,2,5]
l = [6,5,2,0,8,4,2,6,5,8,2,5]
a = 0
while a<len(l):
    if l[a]==0:
        print('存在')
        break
    a+=1